Porcelain-coated gas burner



May 24, 1949. s. w. ZIMBELMAN PORCELAIN-COATED GAS BURNER 2 Sheets-Sheet 1 Filed Dec. 17, 1945 [Wren/0.1- feel/ye [ff-207256217202? May 24, 1949. e. w. ZIMBELMAN 0,

PORCELAIN-COATED GAS BURNER Filed Dec. 1'7, 1945 2 Sheets-Sheet 2 Patented May 24, 1949 UNITED STATES PATENT OFFICE 2,470,881 PORCELAIN-COATED GAS BURNER George W. Zimbelman assignor to Samuel Company, Tennessee Signal Mountain, Tenn,

Stamping and Enameling Chattanooga, Tenn., a corporation of Application December 11, 1945, Serial No. 635,521

(Cl. 1sa-11s) A further object of the invention is the provision of a gas burner including a manifold and a circular burner housing in communication therewith, the housing surrounding a control air admission opening and a circumferential series of elongated nozzles projecting from the outer wall of the housing at an angle of less than 45 to the horizontal.

A still further object of the invention is the provision of a gas burner constructed of relatively light gauge sheet steel having the inner and outer surfaces thereof inclusive of the burner ports enameled whereby the burner is neat in appearance as well as being self-cleaning in use.

Other specific objects, novel features of construction and improved results of the burner will appear in more detail in the following description when read in the light of the accompanying drawings.

In the drawings:

Fig. 1 is a top plan view'of the burner constructed in accordance with a preferred embodiment thereof.

Fig. 2 is a side elevational view of the burner.

Fig. 3 is a vertical sectional view in the plane of line 3-3 Fig. l with the nozzles omitted.

Fig. 4 is an enlarged sectional view disclosing the press flt of a nozzle in the burner housing as well as the internal and external enamel finish.

Fig. 5 is an inside plan view of one of the burner sections.

u Fig. 6 is a similar view of the other burner secon. Fig. '7 is a view of a flanged disc mounted on the free end of the manifold.

Referring now in detail to the drawings, B designates the burner in its entirety. The burner body is constructed of a pair of sheet steel sections it and II and an end cap or flanged disc manifold portion 18 and a half burner housing portion it while section It is provided with a relatively wide marginal flange i5 and section II is provided with a similar but relatively narrow flange it.

The flanges l5 and i8 extend from the free end of the manifold portions and encircle the bollsing portions and the flanges extend laterally of the edges of the cupped sections Ill and Ii forming the burner.

It is to be noted that the sections l0 and I I are identical in form and size except for the different width flanges l5 and IS.

The sections ill and II are assembled with the flanges I5 and it in face engagement and the wider flange I5 is turned downwardly and inwardly over the narrower flange l6 whereby providing a lock seam i! in the absence of welding the sections together.

With the sections thus united a manifold 11:. substantially circular in cross section is provided by portions [3 and a burner housing It is provided by the portions it.

The burner housing h is circular in plan and comprisesinner and outer side walls i8 and I9 merging into upper and lower curved walls 20 and 2| and the inner wall l8 defines a. relatively large air opening 22.

The inner walls 18 of the sections l0 and H are provided with mating flanges 23 in the planes of flanges i5 and i6 and are made fluid tight by the scam I! as well as the porcelain enamel applied as later described.

The flanges 23 are relatively narrow and circumscribe an opening 2-1 within the opening 22.

The manifold 111. communicates with the interior of the housing It and the axis of the manifold is at right angles to the axis of the housing and intersects same in the plane of the flanges i 5 and it.

The end cap I! is provided with a central opening 25 for reception of a gas supply nozzle and is also provided with air admission openings 26. The cap includes a marginal flange 21 which frictionally engages the outer surface of the free end of the manifold m, and the cap is further retained in position by the applied porcelain enamel.

The section I0 is provided with a circumferential series of ports 28 in the outer wall thereof and which are provided prior to assembly of the two sections, and the section I 0 may be further provided with a relatively small number (preferably three) of ports 29 in its inner wall or at the juncture of the inner and top walls.

A plurality of elongated nozzles 30 are pressed into the ports 28 and similar nozzles 3| are 3 pressed into'the ports 29. The ports 28 and 29 are so vdisposed that the nozzles, particularly nozzles 30, project outwardly from the central opening 22 at an angle of substantially 30 or less to a horizontal plane.

This arrangement of the nozzles substantially eliminates the common and objectionable flash back in gas burners.

When the sections HI and II together with cap I! and nozzles 30 and 3| are assembled, the burner is immersed in a liquid porcelain enamel P (illustrated only in Fig. 4 for greater clarity in the other figures) whereby the exterior of the burner does not so readily collect dirt due to its smooth surface, and is easy to clean when dirt does collect. Furthermore, the interior of the burner including the nozzles is porcelain coated whereby the burner is substantially self-cleaning internally in the use thereof.

By immersing the burner in liquid enamel it is not only porcelain coated, but the heat used for baking is sufilcient to properly anneal the sheet steel and'thereby avoid any possible future warping thereof.

From the foregoing disclosure, it will be seen that a gas burner is provided which is not only capable of manufacture at relatively low cost, but which is also highly eflicient in operation.

It is to be particularly noted that the relatively long nozzles arranged as disclosed prevent flash back in operation of the burner, and further provide for emcient operation with natural, manufactured gas, or liquefied petroleum gases.

By constructing the two sections In and II of likeform the manufacture of the burner is materially facilitated. and by the provision of the interior porcelain coating the burner is substan- 5 tially self-cleaning in operation.

While I have disclosed the invention in accordance with a single specific embodiment thereof, such is to be considered as illustrative only, and not restrictive, the scope of the invention being defined in the subjoined claim.

What I claim and desire to secure by U. S. Letters Patent is:

A gas burner comprising a burner housing circular in plan and a manifold communicating therewith, the housing and manifold being formed thereof and tapering toward their inner ends, and

the inner and outer surfaces of the housing, manifold and nozzles having a porcelain enamel coat- GEORGE W. ZIMBELMAN.

REFERENCES CITED The following references are of record in the file of this patent:

FOREIGN PATENTS Number Country Date 4,546 Great Britain 1901 186,084 Switzerland Apr. 16, 1937 

